A) Vf² = vi² + 2ad Subtract 2ad from both sides Vf² - 2ad = vi² Find the square roots of both sides √(Vf² - 2ad) = √(vi²) Cancel out the squares with the square roots Vf - √(2ad) = vi Switch the sides to make it easier to read vi = Vf - √(2ad)
B) Vf² = vi² + 2ad Subtract vi² from both sides Vf² - vi² = 2ad Divide both sides by 2a (Vf² - vi²) / 2a = d Switch the sdies to make it easier to read d = (Vf² - vi²) / 2a
